Engine governor



Oct. 9, 1928,.

H. E. RHoADs ENG I NE GOVERNOR Filed March 21. 1919 2 Sheets-Sheet- 1unf-inniA INVENTOR.

Oct. 9, 1928.

H. E. RHOADS ENGINE GOVERNOR Filed March 2l. 1919 2 Sheets-Sheet 2TTGNEY Patented Oct. 9, 1928.

UNITED STATES HARRY E. RHOADs, OF TOLEDO, OHIOQASSIVGNOR To THRWILLYSJOVRRLAND OOM- PANY, or TOLEDO, OHIO, A CORPORATION O-F OHIO.

ENGINE GOVERNOR.

Application led March 21,1919. SerialirNo. 284,121'. v

This invention relates to engine governors, and moreparticularly to animproved yform of engine governor particularly designed for use inconnection wit-h internal combustion engines. I

Onefobject of the invention 1s to provide an improved device of thischaracter, wherein the speed of the engine is limitedautomatically.

A further object of the invention is to provide an oil pump and governorhaving hollow interengaging driving shafts that co-operate to formacontinuous passage for supplying oilY to the various parts.

A further object of the invention is to provide a device of thischaracter, which is simple in construction and efficient in operation. e

Further object-s of this invention relate to economies of manufactureand details of construction a's will hereinafter appear. from thedetailed description to follow.

The objects ofthe invent-ion areaccomplished in one instance by thedevices and means described in thefollowing specification, but it isevident that the same may be varied widely without departing from thescope of the invention as pointed out in the appended claims. f

A structure constituting one embodiment of the invention, which may bethe preferred, is illustrated in the accompanying drawing forming aparthereof, in which:

Figure I is a vside elevational view of an internal combustion engine,the .engine 'controlmechanism being shown in section for the purposeofbetter illustrating the relative position of the opeiatingparts. Y

Figure II is an end elevation of an internalcombustion engine, a portionof lthe tion to better illustrate theV relative position of the variousOperating parts.

Figure III is an enlarged sectional View, similar to Figure II, andillustrating the relative position` of the that iigure. y

`I `igureY IV is'a perspective view of valveactuatingA rocker arm. l

Similar reference charactersV referto corthe , responding .partsthroughout the several views, and the sectional views are takenlookingin the directionY of the smallV arrows at the ends of the section lines;Y y

In the vembodiment of the invention illusparts as shown in tratedherewith 1l designates fan internal combustion engine Vof the usual typeemployed in connection with automobiles, this invention beingparticularly designed for use in' connection with automobile` trucks ortractors; The engine illustrated herewith is provided with a combinedintake and exhaust manifold 2, having an intake 'passage 3 formedtherein and adapted .to communicate -with the mixing chamber 4positioned in engine is adapted tobelcontrolled by meansy of a controlvalve 7 positioned -between the mixing chamber andthe passage in theintake manifold, the said valve being entirely controlled by anautomatic valve c control mechanism. This y control mechanism` isadapted to be actuated from the engine cam shaft, or any other suitablerotatingfpart of the engine mechanism which has a speed of rotationproportionate to the speed of rotation of the engine crank shaft.

In theV form ofthe invention-illustrated herewith, the cam shaft 8 ispositioned near 13 and 14. These casing sections`13 and 14, l l

which enclose the hollow shaft. 11, and the operating mechanismassociated therewith, are adapted to be securedtogether in any suitablemanner as by machine screws 14. The hollow shaft 1l `ispositionedsubstantially vertically, `and has theflower portion thereof rotatably mountedwithin a sleeve controlling` mechanism being shown in sec- 20 beingpositioned within a recess 22 formed in the lower portion ofthe casingmember 23 and being adaptedto lform a gearpump for ,feeding oil to thevarious partsA ofthe enginev mechanism which are tobe lubricated.

A plate-24fis securedto thelowerportion of y Y the casing 2 3 inanysuitable manner, as by Civ mea-ns of'screws 25 for the purpose ofenclosing the recess 22 within which the gears 19 and 2O are positioned.A portion of the engine casing. 26v within which the casing 23 and itsassociated partsare enclosed, provided with a cover plate 27 sopositioned as to render the casing` 23 and the mechanism carried therebyreadily accessible upon removal of the cover plate. The cover plate Aisvsecured to the casing poition 26 by means ofv aplurality of machine.screws 28. A cylindrical member 29/rests uponthe cover plate 27 andbears against the lower portion of the casing` 23 is such a manner as tohold the Vupper portion of the casing 23 in close `proximity totlierlower portion of the casing "14.-` A radial A flower end of thehollow shaft 16 and the .iassage 30 -,is provided in the `within 'asubstantially cylindrical Casing` member 31, which is suitablyv securedin position within the casinglt'and maybe attached thereto by means of aplurality of' screwsv 322 lThe bearings 12 are each provided with anoutwardly extending annular'liangeformeel at'one end thereof. Secured tothe hollow shaft 11 in any suitable manner as by being'keyed thereto isia' collar '84 which is adapted to rest upon "the annular flange 33carried by the upper --bearing 142.

The collar 34 being keyed or otherwise secured to the shaft 11 rotatesVtherewith and carries two or more bell crank levers'35, which arepreferably oppositely positioned with respect-to the shaft 11, and areeach freely pivoted to the upper portion of the collar 84v at points 36,in such a manner-that any pivotalinovement of the bell crank 85 aboutthe pivot point 8G will be lin a plane passing through the axis of the-Ashaft 11.l Each of` the bell cranks is pro vided with an inwardlyextending arm 3T and an"upwardly extendingarm 38 upon /which isv carriedaball 39.

It will be readily understood that whenv rotation is communicated to'the shaft 11 thru the worin 9V carriedv by the cam shaft 8 and the wormgear lOupon the shaft 11, the shaft 11 will berotated together with thecollar 34 carried thereby, and as the speedof rotation of the shaft 11increases,

centrifugal `force willurgge the balls 39 outwardly from' theshaft 11,thus oscillating the bell' crank levers 35 upon their pivot points 36and *tending lto raise the'inwai'dly extending arms 37 in lsuch aina'nneras to vraisethe sleeve 40 against the-under portion of which theinwardly extendingarins ,37

k,of the bell-:cranks are adaptcd'to contact. Thesleeve40 is freelyslidable upon surface of the shaft 11 and Vbe'r retained in' positionrelative thereto by a nut 43, adjust- 'ably positioned upon the upperend of the shaft 11 and adapted to be locked in Aplace thereon by meansof a lock nut 44. 'It will be readily apparent' that the nut 43, whichbears against thev upper portion vof `the slidable sleeve V42 can Vbethreaded upon .theshaft a sufficient distance to place the desireddegree of tension upon the spring'l', and after having been 'adjusted insuch ainanner as 'to properly tension the" spring '41, the nut 43 ina-ybe clamped in'position by vthe l'lock nut 44. The sleeve 40 is providedwith an outwardly extending flange, 45 ,upon which is adapted to rest,1a ring 46, the movementof which may be controlledby 'the verticalmovement of thev sleeve 40 through a guide leeve 47, which is threadedupon the upper extremity of the sleeve 40- and is provided with f an'outwardly extending 'flange 484 adapted to bear against'the oppositeside of the ring?)` 46, whereby the ring v46 is enclosed between the'flanges 45 and 48, and has its vertical movement controlled thereby.Y

' The ring 46 is provided at diametrica'lly vopposite points with a pairof pins 49, which engage in openings 50 formedin the ends ofa pair offorked 51,"which extend laterally and form a portion ofa bell crankvlever r52, which is provided with an upwardly extending arm 53. Thebell crank 52 is mounted for pivotal movement at upon a horizontal shaft55, said bellcrank. 52 being keyed or otherwise firmly' secured to theshaft 55y inV such a manner as to rotate 'ewith The shaft 55 ismounted'in suitale bearings, and is provided at one end thereof'with anarm' 56 keyed or otherwise firmly secured to the shaft, said aiiir'being' provided ,with vtoothed segmentl 57, .which meshes with a pinionVcarried by the shaft upon which the controlA valvef 'is mounted'. i Theupperportion of the sleeve 47, which is threaded upon the sleeve 40Vlies within a circular recess formed in the cover plate (31 of thecasing", andl thus serves as a guide for the sleeve 40 to control ltrievertical 'move-V 'iront of the, saine'. The cover plate' 61V isadapted-to be secured to thecasing'lS-in any suitable iiiannei, as byscrews 63. nV Vpin 64 secures'one end of a coiled spring 65 vtotheupwardly extending arm of the bell crank v52, whilelthe opposite end ofsai'dV spring Ylm) llU

65 is coiled about a rotatable` sleeve 66 and-has the opposite extremitythereof positioned within'a slot 67 formed in said sleeve 66. Thesleeve'66 vis As previously stated, oil is adapted to be' directedinwardly through the radial opening formed in the shaft 16 and gear 19Acarried thereby so as to pass into the interior passage formed in thehollowr shafts 16 and 11 through which the lubricating oil isforcedupwardlyby the oil pump until it is discharged through the upperportion Lof- `the hollow shaft 11 into the space enclosed by the coverplate 61. From this space the oil may work into the enlarged chamber..of e'the casing 13, occupied by :and the pivoted bell crank 35, betweenthe the ycollar 34 bearing surfaces formed between the sleeve 47 and theinterior surface 60 ofthe cover plate 61, andalso between the sleeves 42and 40.` A Apipe v78 is adapted to vlead from]l the chamber formed inthe interior of the lcasing 13 into the interior of the casing 14,l

said pipe vbeing adapted lto extend to a point substantially level withthe upper surface of .the annular flange 33 formed upon `the beari ing 12 so as to insure a supply of o1l to that portionofthe shaft 11', whichis enclosed within and rotatably mounted -in the Ybearing 12. The excesssupply of oil accumulated inthe ,casing- 13 passes throughthe 'pipe intothe interior` of the casing. 14, from whence it is supplied to theinterior of the cylindrical casing portion 31 through` an oil passageV79, thus providing lubrication for Vthe shaft V11-.at the point where itybears within the lower bearing member. 12. After lubricating. the lower`bearing12, the excess oil will pass downwardly into the interior. ofthe casing 23, where it provides lubrication for the bearing 18 withinwhichy the .lower portion ofthe shaft 16 is rotatably mounted.

It is'to be understoodthat only ak por- Vvtion of the oil is directedwithin the radial openingBO and upwardly through the 1n'-l terior` ofthe `shafts 16 and 11 ,whileV the greater part of the lubricating oilwhichis directed by the gear pump is distributed to the various otherbearing surfaces ofr the engine mechanism to which the oil is properlydistributed by a series of channels (notA shown). A l

The operation of the governor mechanism will now be described;Upon-rotation of the camshaft 8 and the worm gear 9 carried thereby, thehollow shaft lltogether with pivotally mounted upon a shaft 68, which isthreaded into the uppery ,thehouow Shaft -16 win be rotated through theworm 10 from the rgear 9 ata- Saeed 'proportional toA the speed ofrotation o the cam shaft8. lRotation .being imparted to theV shafts 11and 16, the gear pump comprisino'V the gears 19 and 20 will be operatedinsuc a manner as to draw'lubricating oil kfrom the oil reservoir andfeed the same to the vvarious arts 'of the .engine .mechanism which area apted to be lubricated thereby.V

At the same time the rotation of the shafts 11 and 16 impartrotative'movement to the collar 34, which is adapted to be firmly.secured to the shaft 11, thus' the centrifugal force acting upon theballs 39 tends to drawV vtending arms`37 of the bell cranksv 35 will Iraise the sleeve` 40` against' the tension exerted by the coiled spring41, thus causing upward movement -of thering 46, and ro` tating the bellcrank 52 together with the .shaft 55, which is adapted to be rotated bythe bell crank 52. As the shaft 55 is oscillated by movement of the bellcrank, the arm 56 carried by the shaftl 54 causes a slight rotation ofthe shaft 59 carrying the control valve 7.. f

. yThe manually operable control means for engaging the governormechanism in such amanner as to permit the governormecha-n- 4ism to bemanually influencedcomprises the rotatable member 66, which may berotated by means-of connections preferably vextending to a point nearthe driverls seat and so arranged as to permittension' to vbe exertedupon the coiled spring in such aV manner as to place the upwardlyextending arm 53 of the bell crank 52 under ya sufficient degree oftension-so as to partially overcome the weight of the sleeve 40 anditsassociated parts normally carriedby the ',rinv'46. It will bereadily.understood that when Sullicienttension'. is exerted upon; the upwardlyextendingarm 53 of the bell crank 52x-to VovercomeV the Weight of thesleeve 40,*less Vspeed'of the engine, and in the present embodiment ofthe invention upon the yinfluenceexerted upon. the governor by themanually' operated .mechanism The manual lils') .control yIiiechanisn'iis adapted to influence "the governor devices in such a manner asfto beoapableof causinga slowing down of the elbow lever.- under tensionto--partially counteract the Weight of thesleeve 40, such counteractingof a portionof the `weightof the sleeve't() permits the balls 39 to bemore readily; thrown outwardly and. consequently permits a elosingfat alower speed than zwouldl bethe'case if rthe manually operated mechanismwere not-actuated. The purpose ofthe manually.operated mechanism is tocause a. .slowing down ofthe speedofthe imotor at desired points,.wh1leif themanuallyoperable control mechanism remains in its originalposition, the speed of the engine Vwill -be controlled selay the'governor mechanism,whicl i i'sgpreferably arranged in 4 suchy a mannerlas to prevent the speed of thev a' certain 'definite engine fromvexceeding li'mitjV Ilhile 'Iliave shown and described in con-V`siderabledetail a'specific embodiment of -my ^`invention, it isto beunderstood that this' showing and description is illustrative only iand' for the purpose-of rendering my invention more clear, and that I donot regard '..myiiivention as limited to the details ofconstructionvillustrated or described, nor any of them, except-in sofaras I haveincluded vses such limitation within the terms of the following claims,in which it is my intentionto claim-all rnovelty inherent in myinvention broadly as well as specifically.

Vhat ,I yclaim as new and desire to secure i by Letters vPatent'is :y 1.In an'internal"combustion engine, a easing, a'liollow'shaft mountedtherein having an engine governor at the upper 'end thereof, means vfordriving saidV shaft, an

'oil pump detachably connectedv to saidv casing. and a hollow pump'shaft in communicatioirwitli'the'ioutlet of' said pump, saidcasing, ahollow shaft i'nountedthereinl hav- 'ing' control mechanism at the upper.end thereof, means fordriving saidshaft, anfoil yLeeaeae l pump casingdetachably .connected to `said iirstcasmg, an oilfpump `mounted thereinhaving'a hollow shaft communicating. with 'I engine. speed whenever.such is, desired. .Y

`:Whenever thermanually operable sleeve -66 is rotated'in such a manneras to exert tension. upon ythe* spring so. as to placeV the the outletof. said pump, sa-id shafts havbyk said pump isadapted,l to be driven bysaid first shaft and oilY is conveyed through said shafts to saidcontrol mechanism.

3. In. an internal v'combustion-engined a governor, a hollow governorshaft, a hollow pump shaft in alignment with said governor shaft, theadjacent lends of said shafts. being interitted" to. form a idrivingconnection therebetween, ineans operated by the'pump shaft lforforcing oil Ithrough `the hollow shaftsfto said governor, and meansfordriving one of'sai'dy shafts from an operative part of the enginemechanism. Y

Y 1; In an .internal combustion engine, a rcam shaft, ,a hollow'goveri'ior shaftpmeans for driving-thc governor shaft from the camshaft, and a hollow pump shaft inv alignment with saidA vgovernorVshaft' fand.` connected theretovby a separableconnection whereby Y lthe pump shaft may be driven from the governor. shaft or detachedtherefromV vwithout affecting the operation of thegovernor shaft,

and means for forcing oil upwardly through the hollow shafts forlubricating the mechanism. i. 'Y "i 5. In an internal combustion engine,a hollow governor shaft, a hollow'pump shaft in V alignment with saidgovernor shaft, the

tivo shafts being connected in such a manner `as to provide anunobstructed passage through the hollow portions thereof, means forrotating said governor shaft, and means vactuated by said pump shaft forforcing oil through said hollow shafts.

6. In an internal combustion engine, a vertical drive sha-ft having`awpassage therethrough aii engine governorat the upper Vend of saidshaft and 'driven thereby, driving means for` said vertical shaftintermediate the ends thereof` a' casin'g,"a pump shaft therein arrangedto be operatedby the lower end'of said-drive shaftandhaving anoil pas'-Vsage therethrough communicating with-the passage of the drive shaft, anda gear pump adapted to be directly diiif'envby said-pump. shaft andarranged to discharge oil into and through the passagesrof bothof-Is'aid shafts.

. In testimony whereof. I' aiiixmy signature. Y 'HARRY RHOADS,

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